Might I humbly suggest that in the event of several days passing without anyone even trying to guess the correct location; might the site owner not post a hint or two to speed things along? With all due respect, but some of these sites being chosen are so abundant in number and common to so many geographic areas and cultures, there is no way to know where to even begin looking.

Please take this not as a personal criticism, but as a constructive suggestions aimed at all.

Sorry about that. To be honest, I haven't been able to tell whether anyone was actually looking.

Hints so far:1) Not in the Americas or China.2) It is a medieval site

New hints:3) The river and canyon that runs diagonally through the frame marks a modern national boundary.4) Because of the border, access to the site was restricted by permit until quite recently.5) The conservation of the site has been a matter of some controversy in the already troubled relationship between the countries on either side of the border.